/* 网站统一样式 */
html{
    font-size: 14px;
}


body {
    font: 14px normal #565656 '微软雅黑';
    min-width: 1200px;
}

/* 去掉下划线 */
a{
    text-decoration: none;
    color: #565656;
}

/* 图片依据父容器等比例缩放 */
img{
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
}

/* 取消默认盒子定义 */
ul{
    margin: 0;
    padding: 0;
}

/* 去除默认样式（前面的圆点） */
li{
    list-style-type: none;
}

header,
nav,
footer
{
    width: 100%;
    margin: 0 auto;
}

main{
    width: 1100px;
    margin: 0 auto;
}




/* 页面头部 */
.top{
    width: 100%;
    height: 143px;
    background-image: url(../imag/topbg.jpg);
}

.top_logo_search{
    width: 1100px;
    height: 93px;
    margin: 0 auto;
    position: relative;
}

.top_logo_search img[title="材料科学与工程学院"]{
    height: 60px;
    margin-top: 12px;
}

.search{
    position: absolute;
    top: 27px;
    right: 0;
    width: 180px;
    height: 26px;
    padding: 0 0 0 100px;
}

.search_input{
    position: absolute;
    top: 2px;
    left: 124px;
    width: 110px;
    height: 22px;
    border: none;
    background: none;
    line-height: 22px;
    color: #fff;
    font-size: 12px;
    font-family: "宋体";
}

input::placeholder{
    color: #fff;
}

.search_button{
    position: absolute;
    top: 3px;
    right: 10px;
    width: 20px;
    height: 20px;
    cursor: pointer;
}


/* 页面导航 */
.flex_box{
    position: absolute;
    top:93px;
    width: 100%;
    height: 50px;
    margin: 0 auto;
    border-top: 1px solid #b2e3ff;
    justify-content: center;
    display: flex;
    z-index: 9999;
}

.flex_box a:hover{
    background-color: #147fca;
}

.flex_box>li{
    width: 144px;
    text-align: center;
}

.flex_box a{
    display: block;
    font-size: 15px;
    line-height: 50px;
    color: #fff;
}


.in_li{
    overflow: hidden;
}


.in_li ul{
    width: 100%;
    border-top: 8px solid #fff;
    background: #fff;
}

.in_li li{
    text-align: center;
    height: 34px;
    padding: 0px 6px 8px 6px;

}

.in_li li>a{
    width: 132px;
    height: 34px;
    font-size: 12px;
    line-height: 34px;
    background-color: #348bcc;
}

.in_li:hover {
    overflow: inherit;
}


/* 页面主体 */

main{
    width: 1100px;
    display: flex;
    flex-wrap: wrap;
}


/* 顶部轮播图板块 */
.swiper{
    margin: 0px auto;
    height: 367px;
    width: 1100px;  
    overflow: hidden;
    background-color: #fff;
    position: relative;
    z-index: 999;
}
@keyframes video {
    0%{
        transform: translateX(0);
    }
    12.5%{
        transform: translateX(0);
    }
    25%{
        transform: translateX(-1100px);
    }
    37.5%{
        transform: translateX(-1100px);
    }
    50%{
        transform: translateX(-2200px);
    }
    62.5%{
        transform: translateX(-2200px);
    }
    75%{
        transform: translateX(-3300px);
    }
    87.5%{
        transform: translateX(-3300px);
    }
    100%{
        transform: translateX(-4400px);
    }
}

.child{
    display: flex;
    height: 367px;
    width: 5500px;
    animation:video 15s infinite;
    animation-direction:normal;
}

.child img,.child a{
    display: inline-block;
    width: 1100px;
    height: 367px;
}



/* 学院新闻 */

.content1_box{
    width: 733px;
    height: 325px;
    display: flex;
    flex-direction:column ;
}

.content1_header,
.content2_header,
.content3_header,
.content4_header,
.content5_header
{
    display: flex;
}

.content1_header a,.content2_header a{
    width: 39px;
    height: 10px;
    display: flex;
    padding: 25px 0 25px 0;
    border-bottom: 1px solid #ccc;
}

.content1_header h2{
    width: 687px;
    height: 60px;
    font-size: 20px;
    color: #333;
    border-bottom: 1px solid #ccc;
    line-height: 70px;
    margin:0 0 10px 0;
}

/* 学院新闻轮播图 */
.swiper2{
    width: 360px;
    height: 250px;
    display: flex;
    flex-wrap: wrap;
    padding-right: 43px;
}

.swiper2 #lunbo{
    display: inline !important;
    width: 330px !important;
    height: 215px;
    max-width: 360px !important;
    
}

#wenben{
    display: inline !important;
    width: 330px ;
    height: 35px !important;
    line-height: 35px;
    text-align: center;
    color: #222;
    font-size: 10pt;
    font-weight: bold;
    max-width: 360px !important;
}

#wenben:hover{
    color:rgb(31,101,222) ;
}

.swiper2 img{
    display: inline;
    width: 100%;

}

/* 数字按钮 */
.pagination a {
    display: inline !important;
    box-sizing: border-box;
    width: 24px !important;
    height: 24px !important;
    margin-left: 4px;
    font-size: 14px;
    padding-left: 3px;
    color: rgb(145, 120, 120,0.6);
    float: left;
    /* padding: 4px 8px; */
    text-decoration: none;
    background-color: rgb(102, 102, 102,0.5);
    border-radius: 5px;
}
.pagination a.active {
    background-color: rgb(241, 123, 10);
    color: white;
    border: 1px solid rgb(241, 123, 10);
}
.pagination a:hover:not(.active) {
    background-color: rgba(157, 129, 129, 0.5);
    color: rgb(145, 120, 120,0.6);
}


.content1_main{
    width: 733px;
    height: 264px;
    display: flex;
}

.content1_main>ul{
    width: 360px;
    height: 264px;
}

.content1_main>ul>li{
    width: 345px;
    height: 36px;
    line-height: 36px;
    display: flex;
    position: relative;
    padding-left: 15px;
    background: url(../imag/li.png) no-repeat left 15px;
}

.content1_main a,
.content2_main a,
.content3_main a,
.content4_main a
{
    white-space: nowrap; /*不允许换行*/
    overflow: hidden; /*隐藏多余文本*/
    text-overflow: ellipsis; /*使用省略符号*/
    display: inline-block; /*使链接以块级元素形式的显示，方便设置宽度*/
    max-width: 280px; /*设置链接最大宽度*/
    
}

.content1_main a:hover,.content1_header>a:hover,
.content2_main a:hover,.content2_header>a:hover,
.content3_main a:hover,.content3_header>a:hover,
.content4_main a:hover,.content4_header>a:hover
{
    color: #1f7bea;
    
}

.content1_main span,
.content2_main span,
.content3_main span,
.content4_main span
{
    position: absolute;
    right: 0px;
    color: #d9a43d;
    font-size: 12px;
}


.content1_main span{
    padding-right: 15px;
}
/* 通知公告 */
.content2_box{
    width: 367px;
    height: 325px;
}

.content2_header h2{
    width: 328px;
    height: 60px;
    font-size: 20px;
    color: #333;
    border-bottom: 1px solid #ccc;
    line-height: 70px;
    margin:0 0 10px 0;
}

.content2_main{
    width: 367px;
    height: 264px;
    display: flex;
}

.content2_main>ul{
    width: 354px;
    height: 264px;
}

.content2_main>ul>li{
    width: 354px;
    height: 36px;
    line-height: 36px;
    display: flex;
    position: relative;
    padding-left: 15px;
    background: url(../imag/li.png) no-repeat left 15px;
}

.content2_main a{
    white-space: nowrap; /*不允许换行*/
    overflow: hidden; /*隐藏多余文本*/
    text-overflow: ellipsis; /*使用省略符号*/
    display: inline-block; /*使链接以块级元素形式的显示，方便设置宽度*/
    max-width: 280px; /*设置链接最大宽度*/
    
}



/* 两张过度图 */


.center-img{
    display: flex;
    width: 1100px;
    height: 90px;
    flex-wrap: wrap;
    margin:30px 0 30px 0;

}

.center-img img{
    width: 533px;
    height: 90px;
}

.jiange{
    display: flex;
    width: 34px;
    height: 90px;
}


/* 工作动态 */
.content3_box{
    width: 450px;
    height: 300px;
}

.content3_header h2{
    width: 361px;
    height: 43px;
    font-size: 20px;
    color: #333;
    margin: 0;
    border-bottom: 1px solid #ccc;
    line-height: 43px;
}

.content3_header a,.content4_header a{
    width: 39px;
    height: 19px;
    display: flex;
    padding: 12px 0 12px 0;
    border-bottom: 1px solid #ccc;
}

.content3_main{
    width: 400px;
    height: 252px;
    display: flex;
}

.content3_main>ul{
    width: 400px;
    height: 252px;
}

.content3_main>ul>li{
    width: 380px;
    height: 36px;
    line-height: 36px;
    display: flex;
    position: relative;
    padding-left: 15px;
    background: url(../imag/li.png) no-repeat left 15px;
}

.content3_main a{
    white-space: nowrap; /*不允许换行*/
    overflow: hidden; /*隐藏多余文本*/
    text-overflow: ellipsis; /*使用省略符号*/
    display: inline-block; /*使链接以块级元素形式的显示，方便设置宽度*/
    max-width: 280px; /*设置链接最大宽度*/
    
}




/* 公示 */
.content4_box{
    width: 400px;
    height: 300px;
}

.content4_header h2{
    width: 361px;
    height: 43px;
    font-size: 20px;
    color: #333;
    margin: 0;
    border-bottom: 1px solid #ccc;
    line-height: 43px;
}

.content4_main{
    width: 400px;
    height: 252px;
    display: flex;
}

.content4_main>ul{
    width: 400px;
    height: 252px;
}

.content4_main>ul>li{
    width: 380px;
    height: 36px;
    line-height: 36px;
    display: flex;
    position: relative;
    padding-left: 15px;
    background: url(../imag/li.png) no-repeat left 15px;
}

.content4_main a{
    white-space: nowrap; /*不允许换行*/
    overflow: hidden; /*隐藏多余文本*/
    text-overflow: ellipsis; /*使用省略符号*/
    display: inline-block; /*使链接以块级元素形式的显示，方便设置宽度*/
    max-width: 280px; /*设置链接最大宽度*/
    
}

/* 快速通道 */
.content5_box{
    width: 200px;
    height: 300px;
    padding-left:50px ;
}

.content5_header h2{
    width: 200px;
    height: 43px;
    font-size: 20px;
    color: #333;
    margin: 0;
    border-bottom: 1px solid #ccc;
    line-height: 43px;
}

.content5_main>ul{
    width: 200px;
    display: flex;
    flex-direction: column;
}

.content5_main>ul>li{
    padding-top: 24px;
}




/* 页面底部 */
footer{
    background: #59b4ec;
    color: #fff;
    width: 100%;
    height: 109px;
    margin-top: 20px;
}

.content_footer{
    width: 1100px;
    height: 109px;
    margin: 0 auto;
    display: flex;
}

address{
    display: flex;
    width: 872px;
    height: 40px;
    flex-wrap: wrap;
    font-style: normal;
}


address h2{
    width: 100%;
    margin-top: 20px;
    font-size: 16px;
}

address ul{
    display: flex;
    width: 684px;
    flex-wrap: wrap;
    margin-top: 6px;
}

address ul>li{
    margin-bottom: 5px;
}

address ul>li>a{
    padding-right: 12px;
    flex-wrap: nowrap;
    font-size: 14px;
    color: #fff;
}

.content_footer>ul{
    margin-top: 20px;
    width: 228px;
    height: 89px;
    display: flex;
    flex-wrap: wrap;
    font-size: 12px;
}